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Sri Lanka Multi-Client Programme

In August 2019, Bell Geospace were awarded exclusive rights to acquire and provide industry defining multi-client Gravity Gradiometry data over Sri Lanka’s Mannar and Cauvery basins by the Petroleum Resources Development Secretariat of Sri Lanka (PRDS). The Sri Lanka FTG Multi-Client Programme includes airborne 3D Full Tensor Gradiometry, gravity and magnetic survey data that will be undertaken over the offshore Mannar and Cauvery basins.

With our expertise, advanced data processing and reliable interpretations, the Sri Lanka FTG Multi-Client Programme enables operators to minimise risk while optimizing their exploration budget. This acquisition comes in a timely manner, supporting the 2019 bidding round over blocks M1, M2 and C1. FTG data will allow operators to revisit existing seismic and efficiently design new acquisitions.

Data will be acquired on a 2km x 10km line plan or 4km x 10km, and will be delivered with the full complement of measured tensor components. The primary objective of the survey is to determine the depth to basement, geological trends, and the potential for identification of target structures hosting hydrocarbons.

This will result in 41,555 line km’s of fully processed and interpreted FTG data, which will be integrated with additional datasets such as existing 2D seismic data. Acquisition is expected to start in the first half of 2020. We recommend pre-commitment to secure priority acquisition.

Why undertake a FTG survey in Sri Lanka?

The offshore basins currently lack detailed geological maps showing structures and sub-basins within the area. With the exception of seismic in some areas, no airborne or regional geophysical data related to oil and gas exploration is available. Furthermore, most of the seismic data has been acquired pre-2000, making efficient target delineation challenging. The shallow waters of the Mannar and Cauvery basins make high resolution Air-FTG® the most suitable tool for early stage exploration.

FTG data would provide direct indications of:

Analysing Air-FTG® and magnetic data will enhance geological mapping which in turn will change current geological ideas. This will shed light on many unexplored areas within the Mannar and Cauvery basins in a cost effective way, and limit exposure to risk. It will also bring insights into existing seismic data interpretation and optimize the design of new seismic acquisitions.

GEBCO bathymetry and phase 1 AirFTG programme AOI (yellow polygon)

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